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Find the slope of the line passing through (-5, 1) and (-8, -1).
Correct answer(s):
- 2/3
Simplify using exponent laws: 2^4 × 2^4.
Correct answer(s):
- 2^8
If f(x) = 5x + 7, find f(-5).
Correct answer(s):
- -18
A fair 5-section spinner and a fair 5-section spinner are spun once. What is the probability of getting one chosen section on each spinner?
Correct answer(s):
- 1/25
If U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12} and A = {3, 7, 9, 10, 11}, what is A′?
Correct answer(s):
- {1, 2, 4, 5, 6, 8, 12}
Solve the inequality: 7x + 9 ≤ 37.
Correct answer(s):
- x ≤ 4
Simplify √63 as much as possible.
Correct answer(s):
- 3√7
Add the matrices [[-2, 0], [-4, 5]] and [[-1, 3], [1, 4]].
Correct answer(s):
- [[-3, 3], [-3, 9]]
Solve for x: 9x + 7 = 43.
Correct answer(s):
- 4
Expand and simplify: (x – 5)².
Correct answer(s):
- x² - 10x + 25
Simplify √112 as much as possible.
Correct answer(s):
- 4√7
Which of the following numbers are prime numbers? Select all correct answers.
Correct answer(s):
- 2
- 3
- 5
Let A = {1, 5, 11, 12, 13} and B = {3, 6, 8, 10, 11}. What is A ∪ B?
Correct answer(s):
- {1, 3, 5, 6, 8, 10, 11, 12, 13}
Expand and simplify: (x + 1)².
Correct answer(s):
- x² + 2x + 1
Expand and simplify: (x – 8)².
Correct answer(s):
- x² - 16x + 64
In a class of 36 students, 17 study only Algebra, 9 study only Geometry, and 6 study both. How many study Algebra or Geometry?
Correct answer(s):
- 32
Simplify √468 as much as possible.
Correct answer(s):
- 6√13
If f(x) = 6x + 9, find f(-1).
Correct answer(s):
- 3
Solve the inequality: 3x + 7 ≤ 1.
Correct answer(s):
- x ≤ -2
Simplify using exponent laws: 2^3 × 2^4.
Correct answer(s):
- 2^7